>And if there is no God, then why are we doing good things anyway? If there's no God to reward us of the good things and sacrifices we do on Earth, then what are all these for? All are useless...

So the only reason you do good things is because there is a God and you want to be rewarded for doing good things. Isn't that rather selfish? I have much more respect for the aetheist who does good things because they benefit humanity, not because they benefit himself.